Properties of child classes lost after serialize->unserialize

[david0]

An object that is serialized using sleep looses instance properties that are declared in child classes:

class Book extends Base\Book
{
  private $color;
  public function setColor($color) { $this->color = $color; }
  public function getColor() { return $this->color; }
}

$book = new Book();
$book->setColor('blue');

echo 'Before: '.$book->getColor()."\n";
$unserializedBook = unserialize(serialize($book));
echo 'After: '.$unserializedBook->getColor()."\n";

Output

Before: blue
After:

I would expect that the property would be restored by default, similar to PHP's default behavior.
baseObjectMethods.php:209 is causing this problems. get_object_vars is scope aware and does not return the attributes of child classes. ReflectionClass::getProperties should work as expected here.

[marcj]

Thanks for the report. Do you mind sending a fix in a pull-request?